import datetime
import pandas as pd
import math
import matplotlib.pyplot as plt
relevant = pd.io.parsers.read_csv('http://hasan.d8u.us/links.py.cgi?format=csv')
bins = math.floor(len(relevant)/50)
plt.hist([int(datetime.datetime.fromtimestamp(t).strftime('%H'))+1 for t in relevant['Timestamp']], bins=bins, histtype='stepfilled', range=[1,24])
plt.xlabel('Hour of Day')
plt.title('What hour were links sent out?')
plt.show()